<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script>
			//var age=30;
			//document.write(age--);
			document.write(isNaN("100"));
			document.write(Math.pow(2,3));
        
			
		</script>
	</body>
</html>
